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3RU2166-5FB10-8K
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3RU2166-5FB10-8K
SIEMENS
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3RU2166-5FB10-8K - Thermal Overload Relay 180 - 250 A, Separate Mounting, Auto/Manual Reset, Suitable For S10 Size Contactor - siemens

Cat No. 3RU2166-5FB10-8K
Category Over Load Relay
Stock In Stock
Condition Brand New, Sealed Packaging
Product Type Over Load Relay

In Stock — 1 Qty

$242.25
Quantity Expected Delivery
1 Units 25 Business Days

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Technical Specification

SIEMENS 3RU2166-5FB10-8K Over Load Relay Technical Specification

Over Load Relay
Bimetal relay Type TA25, TA42 and TA506
Contactor Type 3RU
Current Range 180-250A
Range of Product —
Secondary Volt Ac -
Sub Family -
Type Thermal Overload Relay

Product Details

Siemens 3RU2166-5FB10-8K - Overload relay 180...250 A CT operated for motor protection size S10, class 10 individual mounting main circuit: busbar connection AUX. circuit: screw terminal manual-automatic reset. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Product Dimensions

SIEMENS 3RU2166-5FB10-8K dimensions and weight

Dimensions (L × W × H)
Length 15.3 cm
Width 19.5 cm
Height 18.1 cm
Weight
Net Weight 1.92 kg

Dimensions are approximate. For precise dimensional drawings, contact us.

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Product Overview

Siemens 3RU2166-5FB10-8K - Overload relay 180...250 A CT operated for motor protection size S10, class 10 individual mounting main circuit: busbar connection AUX. circuit: screw terminal manual-automatic reset. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Frequently Asked Questions for 3RU2166-5FB10-8K

The Siemens 3RU2166-5FB10-8K overload relay provides dependable motor protection with thermal overload sensing, phase imbalance detection, adjustable current settings, manual/auto reset options, and seamless coordination with Siemens contactors.
It is used in MCC panels, pump applications, conveyor systems, compressors, HVAC units, and industrial automation setups requiring overload protection.
It monitors the motor current and trips during overload, phase failure, or overheating, preventing damage to motor windings and extending operational lifespan.
Check full-load motor current, trip class rating, compatibility with Siemens contactors, auxiliary contact requirements, and reset mode settings.
Ensure proper mounting alignment with the contactor, correct wiring of control circuits, accurate overload dial setting based on motor FLC, and verify the trip/reset operation.
Price varies depending on current range and model series. Visit Electrihub for the latest Siemens overload relay pricing and availability.
The official Siemens datasheet for 3RU2166-5FB10-8K is available on Electrihub with detailed wiring diagrams, trip curves, and installation specifications.
The price of SIEMENS 3RU2166-5FB10-8K Over Load Relay depends on specifications, availability, and market conditions. You can check the latest GST-inclusive price on Electrihub India, which provides genuine products, transparent billing, and PAN India delivery.
Yes. RAS Electrihub Private Limited provides PAN India delivery with reliable logistics, safe packaging, and doorstep delivery across all states and union territories.
Yes. RAS Electrihub Private Limited issues GST-compliant invoices and also supports PO-based invoicing for businesses, contractors, and organizations across India.
Yes. RAS Electrihub Private Limited operates as an ISO-certified organization, ensuring quality sourcing, authentic products, and standardized procurement and delivery processes.

Reviews & Ratings

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Gopal Srivastava Jun 8, 2026

Purchased this SIEMENS Over Load Relay (3RU2166-5FB10-8K) from RAS Electrihub. 100% genuine component received with proper manufacturer warranty and GST invoice. Highly recommended for industrial needs.

Manoj Iyengar Jun 8, 2026

We always trust SIEMENS for protection devices. This Over Load Relay was available in stock on RAS Electrihub at a competitive price. Support team helped with cross-checking the model compatibility.

Prabhat Kapoor Jun 8, 2026

The 3RU2166-5FB10-8K is working perfectly in our control panel. RAS Electrihub provided very fast delivery across India. Outstanding service.

Utkarsh Pandey Jun 8, 2026

Great procurement experience on RAS Electrihub's .in portal. Fast transit and genuine SIEMENS product. The 3RU2166-5FB10-8K is installed and running fine.

Rishabh Khanna Jun 8, 2026

Smooth ordering process and quick delivery. This SIEMENS Over Load Relay (3RU2166-5FB10-8K) is authentic and works exactly as required. Will buy again from RAS Electrihub.

Rajesh K. Dec 2, 2025

3RU2166-5FB10-8K outstanding overload detection and protection.

Rajesh K. Dec 2, 2025

Our facility's motor protection has been significantly enhanced with SIEMENS 3RU2166-5FB10-8K installation. The 3RU2166-5FB10-8K precise thermal protection mechanism, reliable operation, and excellent compatibility make this an ideal choice for modern motor control panels.

Charlotte B. Dec 2, 2025

Upgraded to SIEMENS 3RU2166-5FB10-8K for enhanced overload protection across facilities. The 3RU2166-5FB10-8K performance has exceeded all expectations.

Nancy Clark Dec 2, 2025

Best in class 3RU2166-5FB10-8K thermal protection mechanism with dependable operation.

David K. Dec 2, 2025

After extensive testing of SIEMENS 3RU2166-5FB10-8K, this device demonstrates exceptional overload protection characteristics. The 3RU2166-5FB10-8K protection mechanism is responsive, accurate, and reliable under various load conditions. Installation was straightforward, and integration with motor control systems was seamless.

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